Float-valve.



w, f. Bum. rLoATvALvE.

APPLICATIQN FILED JUNE Il. 19H.

:rus ca.. wom-uma, wAsNmc nm. lz c'.

Patented Jan. 2, 1917.

/A/l/EA/ Tae l/l//L L /A NEFF; er*

'ro THE LEADER Evnr ORATOR COMPANY, A CORPORATION OF VERMONT.

rLoA'r-vALvn.

lTo all whom it may concern: f

Be it known that I, WILLIAM E. BURT, a citizen of the United States,residing at Burlington, county o f Chittenden, State of Vermont, haveinvented certain new and useful Improvements in Float-Valves, of whichthe following is a specification. A

This invention relates to valves and particularly to a float valve.

The valve of my present invention `is, especially designed for use insugar camps. he usual method of rendering the syrup to securey theresidual sugar involves boiling the syrup slowly in a suitable containeror vkettle over an extended period of time. The fsyrup 'is' collectedand poured into a tank V.fromwhich it feeds to the kettle. It is highlyimportant to maintain they surface level of the fluid content in thekettle constant so as to secure uniform boiling. The evaporation of thesyrup due to the boiling `is a matter which can only ber approximated inbasing calculations. Variations in the heat intensity, the atmosphericconditions and the run or quality of the syrup are all factors whichmake toward uncertainty in the boil-- ing process. "It is thereforenecessary to regulate the feed of the sa to the kettle indirectproportion to the uid content of the kettle. To the end thereforeof propor tioning the sap feed'to the surface level of the kettlecontent, I have devisedmy present invention. In it I provide a floatvalve arranged in controlling relation to the inlet pipe from the saptank, and adapted to be proportionately opened and closed by variationsin the surface level of the kettle `contents. Extreme variations in thesurface level are taken care of by providing a rela- `tive adjustmentbetween the stem of the float and the valve lever for the valve stem.This permits'initial setting of the kettle for predetermined capacitiesso'that as the content evaporates more sap is automatically `let in tomaintain the predetermined fluid level'constant. The vvalve has aswiveled mounting so'that it may Mvseat against the mouth of the inletpipe and beV effective under varying conditions ,of boiling, as for example; where the contained fluid is under extreme agitation, due toviolent boiling.

lVenting means are also provided for relieving the hollow float itself.0f any contained Specification of Letters Patent.

Patented J an. 2, 1917.

Application mea Jane i1, 1914. serial No. 844,472.

air which may be present. rlhese and various other Vfeatures which'willappear more fully hereinafter are secured by the use of the float valveof my present invention.

The construction and operation of my valve will be more fully disclosedin the specication which follows. In the drawings forming a part of thatspecification l have shown as anillustrative embodiment a form of valvewhich has been found satisfactory in use and well'adapted to therequirements of manufacture. t

Throughout' specification and drawings like reference numerals arecorrespondingly applied, and in these drawings: Figure l is a# view ofmy valve in applied position within 'a kettle or other boilingapparatus,

Fig. 2 is a partial section on the indicated line 2 2 of Fig. l. Fig. 3is a view on the line 3-3 of Fig. 2, looking in the direction of thearrows, and Fig. t is*y a detail of the ioat detached. f

I have indicated at l, Fig. 1, a part of a containing tank into whichthe collected sap is poured. The tank yl vand the rendering kettle orother container 2, in which the boiling takes place, are put in directcontrollable communication by a suitable pipe 3, connecting exteriorlyof the kettle wall with a ground nipple i fixed in the kettle wall,adapted to receive a supply pipe 41.

The delivery of sap through the nipple l is controlled by a disk valve 5adapted to find a seat against' the beveled inner end 6 of the nippleand checkthe delivery whenever the fluid content of the kettle reachesthe predetermined level for which it is set.

The disk valve 5 is frictionally held within a'cupped holder 7 swiveledto the vertical portion 71 of a valve lever 8 by a stud 9. The lever 8serves to transmit the lift of a l float 23 to the valve in response tovariations in the fluid level. One face ofthe holder 7 movements of thelloat to the valve is conveniently formed `by uniting two suitably bentrods 81 to each other for substantially their entire length. Thevertical portion 71 of the lever at its lower end has its rods 81 bentaway from each other in the form of a horizontally disposed yoke 12terminating in spaced ends wrapped around a pintle, 14

in the form of coils 15.

The pintle 14 is lfixed to a wall of the kettle 2 in spaced relationthereto in any suitable manner. A convenient mode of attaching theIpintle consists in soldering or otherwise securing to the containerwall two or more pieces l'lhaving each one of their ends bent in theform of a coil 18 through which the pintle is inserted and clamped. Thecoils 18 in addition to iixing the pintle to the container serve tospace the pintle a sufficient distance from the container wall to allowclearance for the coils 15 in the rocking motions of the valve lever.

The vertical portion 71 of the lever at its upper end has its unitedrods 81 bent at right angles to provide a horizontal portion 19extending into the kettle above the .indicated fluid level. The portion19 has a hook `20 fastened to it at its inner terminus. The hook 2O isadapted for selective engagement in any of a vertically disposedseriesof holes 21 in the web portion of the stem 22 for the hollow float23. This permits setting the valve at a predetermined limit which whenexceeded permits the valve to become effective. The hook 20 and holes 21also provide for considerable range of`adjustmentl ofthe float relativeto the valve, permitting vthe float to be used for varying Huid levels.

The stem 22. is formed as a relatively thin strip of material having itslateral edges turned in and back upon the web portion to provide a pairof spaced vent tubes 24 which connect the hollow float 23 with theatmosphere and serve tol relieve/the oat of any contained air.

In use, the lever is attached'so as Vto freely turn on its pintle andthe hook 20 selectively engaged in any of the holes 21 in the stem 22 ofthe lioat according to the limit at which it is desired that the valvebecome effective. Variations in the surface level of the kettle contentare transmittedV by the ioat to the valve lever which rocks on itspintle to control'the position of the valve relative to its seat 6. Thevalve being swiveled is free to find its seat under almost any conditionof use.

While I have shown and described my float valve as `applied to arendering kettle it will of course be understood that I do not limitmyself to this or any other use but reserve the right to employ it inany capacity where it will perform its intended functions.

Various modifications in the form and con- .Struction of my device mayobviously be said horizontal end in supporting -relation thereto. Y

2. A valve for an evaporating tank or the like, ycomprising a vertically.disposed` seat, an arm pivoted below said seat and extendedhorizontally, then vertically, 'then .horizontally, and a lfloat memberdisposed Vin supporting relation to said horizontal-extensie lastmentioned.

3. In a device of thewclass described, a

tank, an intake discharging therein, aivalve for the kend of saidintake, an axially movable float, and a one piece supporting ymeinberhaving a portion pivoted below said Idelivery, a portion disposedopposite said delivery Aand carrying said valve, and a 'portion disposedabove vsaid delivery and engaging said float. f Y

f 4. In a valve of the class described, a valve and a valve supportingmember comprising a pair of suitably bent rods united with each otherfor .substantially their entire length.

5. In a valve `of 'the class described, a valve, a valve supportingmember comprising a pair of suitably bent rods united with each otherfor substantially their entire length, said yrods bent away fromeachother at one end .to form a yoke', and a support .to which saidyokecis pivoted.

6. In a device of the class described -a tank, a float, a supply pipehaving substantially lateral discharge into` said tank, a valve, a valve-supporting device comprising a horizontally disposed portion pivoted atits terminus below said valve., a vertically disposed portion carryingsaid valve, and a horizontally disposed portion extending in oppositedirection to said first named horizontal portion and having selectiveengagement with said float. y

7. In aV devicecof the cla-ss described, a fluid delivery, a valveVvcontrolling said delivery, a valve supporting member pivoted below saiddelivery, and a float disposed be- .low said delivery and connected tosaid valve supportingmember at a point above the delivery. Y

8. In a device of the class described, a fluid delivery, a valvesupporting member, a valve, operatively connected with said member andfully opening with the ressure head through said delivery, and a oatdisposed below said delivery and connected to said valve supportingmember at a point above the delivery.

9. In a device of the class described, a fluid delivery having a valveseat at its discharge end, a valve supporting member pivoted below saidseat, a valve operatively connected with said member opposite thedischarge end of said delivery and opening with the pressure headthrough said delivery, and a lioat connected to said valve supportingmember at a point above the de livery.

10. In a valve, a seat, and a shaped pivotal support for said seat.

11. In a valve, a seat, a 1 shaped support therefor pivoted below saidseat, and a float disposed in supporting relation to a portion of saidsupport.

12. In a device of the class described, a substantially lateral fluiddelivery, a valve, a float, and a member pivoted below said delivery andhaving a valve supporting portion disposed opposite said delivery,

Copies of this patent may be obtained for ve cents each, by addressingand a float engaging portion disposed above said delivery and supportedby said float.

13. In a device of the class described, a receptacle, a fluid deliveryentering said receptacle laterally, a horizontal member pivotallymounted below said delivery, and having a vertical portion disposedtransversely of said delivery, and a valve carried by said verticalportion opposite said delivery, and opening laterally away from saiddelivery with the pressure head.

14. In a device of the class described, a fluid delivery, an axiallymovable valve therefor, a oat and a valve carrying member pivoted belowsaid delivery and having a portion disposed above said delivery andsupported by said float.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM E. BUR'I.

Vitnesses:

ERNEST MCFEETERS, CARRE E. WALDRON.

the Commissioner of Patents,

Washington, D. C.

